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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32b0fdf5f9beb8b48248d0cb3fcdd5f2912f39ed2013942164c151e7dc558885' 
  AND token = '/QT0ZO45onWwrj+HUuQSdUFF324ymKw1pGOohtFGjwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}